Influence of the amorphous phase molecular mobility on impact and tensile properties of polyamide 6,6

Anda, Agustín Rios de; Fillot, Louise-Anne; Long, Didier; Sotta, Paul

doi:10.1002/app.43457

Cited by 15 publications

(11 citation statements)

References 37 publications

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“…when no more CV was absorbed by the networks. 9,14, [46][47][48] From these experiments the mass percentage intake at equilibrium of CV in AE-3T/4T networks ∆m was calculated according to Equation 9.…”

Section: Sorption Measurementsmentioning

confidence: 99%

Multiscale Structural Characterization of Biobased Diallyl–Eugenol Polymer Networks

et al. 2020

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HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

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Section: Sorption Measurementsmentioning

confidence: 99%

Multiscale Structural Characterization of Biobased Diallyl–Eugenol Polymer Networks

et al. 2020

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“…These samples were heated from -140 • C to 180 • C with a heating rate of 3 • C/min and analyzed with a frequency of 1 Hz, a pre-strain of 0.01%, and strain of 0.1%. The main α relaxation temperature T α was obtained from the half-height point of E drop corresponding to this relaxation 57. Furthermore, the crosslinking density v C−DM A for each PTMC network was obtained by conducting a DMA strain sweep measurement at T α + 90 • C so as to allow a precise comparison between these results and those obtained by NMR at the same molecular mobility state.…”

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confidence: 99%

Multiscale Structural Characterization of Biocompatible Poly(trimethylene carbonate) Photoreticulated Networks

Bochove

Spoljaric

Seppälä

et al. 2019

ACS Appl. Polym. Mater.

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Poly(trimethylene carbonate) (PTMC) polymeric networks are biocompatible materials with potential biomedical applications. By controlling the chemical synthesis, their functional macroscopic properties can be tailored. In this regard, this work presents the coupling of two experimental techniques: DMA and Solid State NMR, 1 as an innovative, robust and straightforward approach to fully characterize the inner structure and its relationship with the macroscopic properties of these PTMC materials. The studied photocured networks had an increasing macromer molecular weight M n , varying from 3 kg/mol to 40 kg/mol, which permitted to assess the variation of thermomechanical properties and the Nuclear Magnetic Resonance (NMR) signal decay with this parameter. Dynamic Mechanical Analysis (DMA) showed that the thermomechanical behavior of the PTMC networks depends on the network M n. Indeed, the elastic modulus E and the main α relaxation temperature T α decrease with PTMC M n. Moreover, solid state Multiple Quanta (MQ) 1 H NMR investigations demonstrated that the network crosslink density is also linked to this chemical parameter. Interestingly, both techniques showed for the 40 kg/mol PTMC a neat difference of the effect of the chemical crosslinks and the physical entanglements on the materials network structure and thermomechanical behavior. Specifically two different molecular relaxation domains were highlighted, which are not observed for the rest of the studied materials. By utilizing DMA and solid state NMR in a complementary and synergetic manner, this work provides a novel and robust approach of determining and better understanding key structure-property relationships, specifically the inner structure and macroscopic properties, of such functional polymers.

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“…Samples of about 15 mg were heated from 25 °C to either 200 °C or 250 °C at a rate of 3 °C/min, with temperature modulation of ±2 °C and a period of 60 s under a nitrogen flow of 50 mL/min. Analyzing the reversing heat flow signal allowed to determine g T of which the value was taken at the half height of the step-change in the signal [36][37][38]. Thermogravimetric analyses (TGA) were conducted on a Setaram Setsys Evolution 16 apparatus.…”

Section: Experimental Techniquesmentioning

confidence: 99%

Dual UV-Thermal Curing of Biobased Resorcinol Epoxy Resin-Diatomite Composites with Improved Acoustic Performance and Attractive Flame Retardancy Behavior

Nguyen

Vahabi

Anda

et al. 2021

Sustainable Chemistry

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This study has developed novel fully bio-based resorcinol epoxy resin–diatomite composites by a green two-stage process based on the living character of the cationic polymerization. This process comprises the photoinitiation and subsequently the thermal dark curing, enabling the obtaining of thick and non-transparent epoxy-diatomite composites without any solvent and amine-based hardeners. The effects of the diatomite content and the compacting pressure on microstructural, thermal, mechanical, acoustic properties, as well as the flame behavior of such composites have been thoroughly investigated. Towards the development of sound absorbing and flame-retardant construction materials, a compromise among mechanical, acoustic and flame-retardant properties was considered. Consequently, the composite obtained with 50 wt.% diatomite and 3.9 MPa compacting pressure is considered the optimal composite in the present work. Such composite exhibits the enhanced flexural modulus of 2.9 MPa, a satisfying sound absorption performance at low frequencies with Modified Sound Absorption Average (MSAA) of 0.08 (for a sample thickness of only 5 mm), and an outstanding flame retardancy behavior with the peak of heat release rate (pHRR) of 109 W/g and the total heat release of 5 kJ/g in the pyrolysis combustion flow calorimeter (PCFC) analysis.

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Influence of the amorphous phase molecular mobility on impact and tensile properties of polyamide 6,6

Cited by 15 publications

References 37 publications

Multiscale Structural Characterization of Biobased Diallyl–Eugenol Polymer Networks

Multiscale Structural Characterization of Biobased Diallyl–Eugenol Polymer Networks

Multiscale Structural Characterization of Biocompatible Poly(trimethylene carbonate) Photoreticulated Networks

Dual UV-Thermal Curing of Biobased Resorcinol Epoxy Resin-Diatomite Composites with Improved Acoustic Performance and Attractive Flame Retardancy Behavior

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